Ventilator.



D. P. GOSLINE.

VENTILATOR.

APPLICATION FILED AUG. H, 1911.

1,139,672. Patented May18, 1915.

IHE NORRIS PETE/\S C0,, FHOTDYLITHO WASHINGTON. L). C,

r sa'rs VENTILATOR.

Application filed August 11, 1911.

To all whom it may concern Be it known that I, DANIEL P. Gosmnn, ofBoston, in the county of Suffolk and State of Massachusetts, a subjectof His Majesty King George V, have invented a new and useful Improvementin Ventilators, of which the following is a specification.

In ventilating factories such as dye houses, bleacheries and paper millswhere a large amount of steam or saturated air must escape either undergravity conditions or be forced out by fans or blowers, it has beenamply proved that unless the ventilating pipe which ordinarily passesout through the roof of the building is constructed of material which isa good nonconductor there is apt in cold weather to be rapidcondensation of the steam or saturated air, which condensation will fallback into the building unless gutters are provided to receive it. Thegutters, however, are subject to frost or cooling from some cause orother and hence are inefficient for the purpose for which they areintended. For these reasons such ventilators have been very largely madeof wood, but a wooden ventilator is apt to rot and require constantrepair.

It must be remembered that the atmospheric temperature to which theexterior of these ventilators is subjected during a large part of theyear is many degrees cooler than the temperature of the air or steampassing out through the ventilator and hence this condensation isconstantly taking place.

My invention relates to a ventilator in which these faults are overcomein such a way as to render the ventilator practically impervious tocold, capable of long life, of

great efficiency and adapted for all kinds of buildings and for allkinds of work, and it comprises a ventilator the walls of which areentirely inclosed with a series of hermetically sealed air chambers andwhich is covered (leaving, however, a sufiicient opening for theescaping air) by a hood which also contains an air chamber sufficientincharacter to protect the escaping air or steam from the condensinginfluence of the atmospheric air. Moreover, my ventilator, indistinction from metal ventilators now in use, is not subjected toexpansion and contraction at its junction with the roof for the reasonthat the protection given it by the air chambers above referred toextends in the preferred form of my ventilator to the roof Specificationof Letters Patent.

Patented May 18, 1915.

Serial No. 643,527.

itself and so protects this junction that the pipe where it passesthrough the roof is not subject to changes of temperature other thanthose which proceed from the escaping a1r or steam. I

My invention will be understood by reference to the drawings, in whichFigure l is a vertical section of a ventilator embodying my invention,Fig. 2 being a horizontal section on the line 22 of Fig. l.

A is the main pipe by means of which the steam and hot air is carriedoff from the interior of the building, B being the roof through whichthe ventilator projects. The pipe A is suitably hooded, the hood or capin the drawings comprising a conical top portion A having a deflector ashaped like an inverted cone projecting downward from its center,forming with the hood a closed air chamber, the whole being supported bysuitable supports a of bar iron or other convenient material, thesesupports extending down within the pipe A and being bolted or rivetedthereto as shown. Around this pipe A is a base section C of largerdiameter than the pipe and attached thereto and to the roof by anannular roof flange 0 whichis bolted to the roof and preferably is bentdownward as at c to lie between the pipe A and the opening in the roof Bso as to center the pipe A. lhe upper edge of this base piece C isbolted or riveted as at c to the pipe A. From this base piece C projectsupward a casing D of somewhat larger diameter than the pipe A, thiscasing being bolted or riveted as at (Z to the base piece C and at itsupper end being bolted to the top cone or wind shield E which in turn isbolted to the pipe by the upper one of the bolts which holds thesupports a in place. The casing D has a series of rings (Z projectingfrom its inner surface and adapted to clasp the pipe A. In the drawingtwo of these rings are shown, but there may be as many others as thelength of the pipe A warrants. The casing D also has a number ofvertical partitions (Z attached to its inner surface and also attachedto the pipe A so that there are formed about the pipe A a number ofcompartments or chambers each separated from the other and from theatmospheric air and the interior of the pipe A and serving as airchambers to insulate the interior of the pipe A from changes oftemperature in the atmosphere which might soldered together so as tohermetically seal the chambers.

As is well known, air spaces so called are excellent non'conductors oftemperature and while my invention may be carried out in other ways byuse, for example, of solid material which would serve for purposes ofinsulation, I have found that the above described device is very simpleand easy to make and adjust to suit any specific problem and whenproperly adjusted it has proved an exceedingly eflective insulator forthe purpose stated. I have shown this insulator extending from the roofto the top of the pipe and this should be substantially its constructionalthough a slight variation in certain cases might not proveineffective.

With regard to the cover or top of the ventilator it will be noticedthat this is also a confined air chamber such that it too will serve toprevent the chilling of the steam when it strikes it. It may besurmounted by an ornament F which mayalso be hollow.

Other means ofcarry ing out my invention and other uses for such aninsulator as I have described will suggest themselves to those skilledin the art and other forms of my insulator may be adopted wherever theparticular problem requires some change over the precise form shown inthe drawings. The above, however, is a simple construction and fullyillustrates the invention.

I prefer to use sheet metal in constructing a device of this character,but I do not mean to limit myself to such material as any otherweather-proof material will answer the purpose. I

What I claim as my invention is:

1. The ventilator above described comprising a central flue adapted toproject through a roof, a base plate around'said flue adapted to beattached to the roof, van I Copies of this patent may be obtained forannular lateral support attached to said flue near the lower part of itsprojecting portion and also to said base plate whereby the junction ofsaid flue and the roof is strengthened, said lateral support formingwith the outside of said flue and said base plate an air chamber, a.jacket mounted on said lateral support, vertical and horizontalpartitions attached to the outside of said flue and tothe inside of saidjacket whereby said jacket will be centered and said flue supported andair chambers will be formed between said jacket and said flue, a windshield mounted on said jacket and extendupwardly to engage said fluealong its upper portion whereby its upper portion is strengthened, andahood attached to the upper portion of said flue and said wind shield. 7

V 2. In a metallic ventilator, the combination with a metal pipe forminga ventilating flue, of a metallic casing surrounding said lng outwardlytherefrom and inwardly and pipe and spaced therefrom, and means withmsaid casing for forming aseries of isolated dead air spaces forinsulating said pipe from the exterior atmosphere.

3; In a metallic ventilator, the combina tion with a metal pipe forminga ventilating flue, of a metallic casingsurrounding said pipe and spacedtherefrom, and longitudinal and circumferential partitions in saidcasing forming a series of isolated dead air spaces for insulating saidpipe from the'exterior atmosphere. j

4:. In a metallic ventilator, the combination with a metal pipe forminga ventilating flue, of a hollow metallic base section surrounding thelower part of said pipe and provided with means for. attachment to aroof, a hollow metallic wind shield surrounding the upper end of saidpipe, and a -metallic casing surrounding said pipe intermediate saidbase section and wind shield and secured thereto, said base section,wind shield, and casing forming air chambers for insulating said pipefrom the exterior atmosphere.

DANIEL P. GOSLINE. Witnesses: v

GEORGE O. G. CoALE, M. E. FLAHERTY.

five .cents each, by addrcssingthe Commissioner 0! Patents, Washington,D. G.

